/**
*作者：奕尘
*/

*{padding: 0;margin: 0;list-style: none;text-decoration: none;box-sizing: border-box;}
body{
    background-color: #1a1a1a;
}
@keyframes jump{
    0%{transform: translate(0);}
    20%{
        transform: translate(10px);
    }
}

nav{
    position: fixed;
    z-index: 999;
    width: 100%;
    height: 74px;
    background-color: #404eed;
    color: #fff;
}

nav ul{
    width: 90%;
    text-align: center;
}
nav ul li{
    display:inline-block;

    font-size: 40px;
    font-family:LiSu;
    padding: 7px 15px;
    border-radius: 10px;
   
}
nav ul li:hover{
    border-bottom: 1px solid #fff;
    border-top: 1px ;
    text-shadow: 3px 3px 3px #1a1a1ace;
}
nav ul li a{
    color: #fff;
    font-size:1.5rem;
 
    
}
#nav-logo{
    position: fixed;
    width: 250px;
    
}
#nav-logo img{
    position: fixed;
    left:10px;
   margin-top: 12px;
    width: 40px;
    height: 40px;
}
#nav-logo div{
    position: fixed;
    display: inline;
    left: 60px;
    top:24px;
    font-size: 1.4rem;
    color: #fff;
}
#nav-logo:hover{
    border-bottom: none !important;
}

#nav-btn{
    z-index: 9999;
    width: 500px;
    
}

#nav-btn a{
    font-size: 1.2rem;
}


/**/
main{
    position: relative;
    top: 140px;
    width: 100%;
}
main .info{
    top: 20px;
    padding-top: 40px;
    width: 100%;
    height: 120px;
    background: url("../images/cloud-2.svg") no-repeat;
    background-size: 300px;
    background-position: center;
    
}
main  .cloud-2{
    
    width: 300px;
    height: 90px;
    margin: 0 auto;
}

#YClist{
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content:center;
}
/*#YClist:nth-child(2n){
    animation: fly 3s infinite linear; 
}
#YClist:nth-child(2n+1){
    animation: fly 5s infinite linear; 
}*/
#YClist li{
    
    position: relative;
    width: 284px;
    height: 284x;
    display: inline-block;
    margin: 120px  40px;

}
#YClist li a{
    width: 100%;
    position: relative;
    display: inline-block;
     
}
#YClist li div{
    width: 284px;
    text-align: center;
    color: #fff;
    
}
.YClist-img-cloud{
    margin-top: 40px;
    width: 284px;
    height: 202px;
    position: absolute;
    z-index: 99;
    /*animation: fly 5s infinite linear;*/
}
.YClist-img{
    position: absolute;
    width: 200px;
    height: 125px;
    margin-top:22px;
    margin-left: 40px;
    border-radius: 10px;
    border:2px solid #926a32;
    box-shadow: #2c200f 2px 5px 2px;
    /*animation: fly 4s infinite linear;*/
}

@media screen and (max-width: 680px) { 
   
    #nav-manu{
        display: none;
    }
    
  }

  @media screen and (min-width: 680px) { 
    

    
  }